CVE-2026-44545
Unbounded WebSocket message and frame sizes can cause unauthenticated remote denial of service
- State
- Published
- Severity
- 5.3 Medium
- Published
- Jun 3, 2026
- Updated
- Jun 3, 2026
- Reserved
- May 6, 2026
Description
daphne before 4.2.2 did not pass maxFramePayloadSize or maxMessagePayloadSize to Autobahn's WebSocketServerFactory. Because Autobahn defaults both values to 0 (unlimited), an unauthenticated remote attacker could send arbitrarily large WebSocket messages or frames, causing excessive memory consumption and a denial of service.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 5.3 Medium | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L | DSF |
Weaknesses
- CWE-770 (Allocation of Resources Without Limits or Throttling)
Affected Products
| Product | Versions |
|---|---|
daphnedjangoproject |
|
References
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